Problem in enabling numkeypad as mouse cursor

Question

Robot robot=new Roobot();
robot.keyPress(KeyEvent.VK_ALT);
robot.keyPress(KeyEvent.VK_ SHIFT);
robot.keyPress(KeyEvent.VK_NUM_LOCK);
robot.keyPress(KeyEvent.VK_NUMPAD2);
This code is used for moving the mouse cursor but it is not working.
It is under the robot class.
pls tell me about the solution to move the mouse cursor?

Answer 1

Here is one that will move your cursor according to the arrow keys you press
PLEASE NOTE: I use Solaris 10 x64 and Java 1.6.0_07 and the key bindings are not correct so you'll have to change them to what your system uses.
import java.awt.AWTException;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.MouseInfo;
import java.awt.Point;
import java.awt.Robot;
import java.awt.Toolkit;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.Timer;
public class JClick {
  int iPress = 0;
  int ixMax = 0;
  int iyMax = 0;
  Robot r;
  public JClick(){
    buildJClickUI();
    try{
      r = new Robot();
    }catch(AWTException ae){
      System.out.println(ae.toString());
    Timer t = new Timer(20, new ActionListen()); //Controls the cursor movement rate across the screen
    t.start();
    Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
    ixMax = d.width;
    iyMax = d.height;
  public void buildJClickUI(){
    JFrame f = new JFrame("JClick 1.0");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setPreferredSize(new Dimension(200, 67));
    JPanel p = new JPanel();
    JButton b = new JButton("Close");
    b.addMouseListener(new MouseListen());
    b.addKeyListener(new KeyListen());
    p.add(b);
    f.add(p);
    f.pack();
    f.setVisible(true);
  public void robotMouse(){
    int x = 0;
    int y = 0;
    Point p = MouseInfo.getPointerInfo().getLocation();
    switch (iPress){
      case  KeyEvent.VK_LEFT:      x = p.x - 1;
                                 if(x < 0) x = 0;
                                 r.mouseMove(x, p.y);
                                 break;
      case  KeyEvent.VK_RIGHT:    x = p.x + 1;
                                 if(x > ixMax) x = ixMax;
                                 r.mouseMove(x, p.y);
                                 break;
      case    KeyEvent.VK_DOWN: y = p.y + 1;
                                 if(y > iyMax) y = iyMax;
                                 r.mouseMove(p.x, y);
                                 break;
      case    KeyEvent.VK_UP:  y = p.y - 1;
                                 if(y < 0) y = 0;
                                 r.mouseMove(p.x, y);
                                 break;
      case KeyEvent.VK_SPACE:    iPress = KeyEvent.VK_SPACE;
                                 r.mousePress(InputEvent.BUTTON1_MASK);
                                 try{
                                   Thread.sleep(50);
                                 }catch(InterruptedException e){
                                   System.out.println(e.toString());
                                 r.mouseRelease(InputEvent.BUTTON1_MASK);
                                 break;
      default: break;
  public static void main(String[] args) {
    JClick c = new JClick();
  class KeyListen implements KeyListener{ //rem class that is in focus gets events
    KeyListen(){
    public void keyPressed(KeyEvent e){
      switch (e.getKeyCode()){
        case  KeyEvent.VK_UP:
        case KeyEvent.VK_ALT:      iPress = KeyEvent.VK_UP;
                                   break;
        case  KeyEvent.VK_DOWN:
        case KeyEvent.VK_SHIFT:    iPress = KeyEvent.VK_DOWN;
                                   break;
        case    KeyEvent.VK_RIGHT:
        case KeyEvent.VK_NUM_LOCK: iPress = KeyEvent.VK_RIGHT;
                                   break;
        case    KeyEvent.VK_LEFT:
        case KeyEvent.VK_NUMPAD2:  iPress = KeyEvent.VK_LEFT;
                                   break;
        case KeyEvent.VK_SPACE:    iPress = KeyEvent.VK_SPACE;
                                   break;
        default: break;
      if(iPress>0) robotMouse();
    public void keyReleased(KeyEvent e){
      iPress = 0;
    public void keyTyped(KeyEvent e){
  class MouseListen implements MouseListener{
    MouseListen(){
    public void mouseClicked(MouseEvent e){
      JButton b = (JButton)e.getComponent();
      if(b.getText().equals("Close")) System.exit(0);
    public void mouseEntered(MouseEvent e){
    public void mouseExited(MouseEvent e){
    public void mousePressed(MouseEvent e){
    public void mouseReleased(MouseEvent e){
  class ActionListen implements ActionListener{
    ActionListen(){
    public void actionPerformed(ActionEvent e){
      if(iPress > 0) robotMouse();
}